Involute Jet Pump

ABSTRACT

An involute jet pump includes a spiral blade, a permanent magnet cylinder rotor having a plurality of magnetic poles and a stator armature. The rotor is a hollow ring body and fastened at an outside of the spiral blade. Magnetic fields of adjoined magnetic poles are different. The stator armature is disposed at an outside of the rotor. The stator coil has rotating magnetic field after electrifying, and the magnetic field of the stator can be electrically modulated. The rotor drives the spiral blade for rotating due to modulated rotating magnetic field of the stator. The rotor embedded with the spiral blade is placed inside the stator armature. The whole volume of the involute jet pump can be effectively reduced. 
     A magnetic field induction generated between the rotor and the stator drives the rotor embedded with the spiral blade for rotating.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of Taiwan Patent Application No. 100145343, filed on Dec. 8, 2011, in the Taiwan Intellectual Property Office the disclosure of which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an involute jet pump, and more particularly to an involute jet pump that firstly generates magnetic field induction between a rotor internally inserted with blades and a stator armature circularly disposed at outside of the rotor and then electrically modulates the rotating magnetic field of the stator armature to allow the rotor to drive the helical blades, thereby effectively improving output efficacy and effectively reducing the whole volume.

2. Description of the Related Art

A pump mainly moves fluid at industry and daily life and also transports a liquid and gas mixture. A centrifugal pump is a pump that converts speed into pressure by utilizing centrifugal force. With reference to FIG. 1 for a schematic diagram of drawing a conventional centrifugal pump. The conventional centrifugal pump includes a motor 10 and a hollow pump body 20. An impeller 30 is disposed inside the hollow pump body 20, and a water inflow hole 210 and a water outflow hole 220 are disposed on the hollow pump body 20. The impeller 30 is connected to the motor 10, and the impeller 30 can rotate at high speed through the linking of the motor 10. A fluid flows into the hollow pump body 20 through the water inflow hole 210 and then flows out the hollow pump through the water outflow hole 220 after obtaining kinetic energy in accordance with the rotation of the impeller 30.

However, the motor 10 of the conventional centrifugal pump may have larger volume although it is connected outside of the hollow pump body 20. Moreover, the output efficacy of the conventional centrifugal pump is low. In other words, after inputting electricity to the motor 10, in a process that allows the centrifugal pump to drive and compress the impeller 30 for pushing the fluid to be outputted through the spindle shaft of the motor 10, the whole efficacy can be only remained at half output efficacy after losing at many places of the centrifugal pump. Consequently, it may cause low efficacy and energy consuming and needs to be overcome.

SUMMARY OF THE INVENTION

In view of the shortcomings of the prior art, the inventor(s) of the present invention based on years of experience in the related industry to conduct extensive researches and experiments, and finally developed an involute jet pump as a principle objective to overcome the foregoing defects.

To achieve the foregoing objective of the invention, the involute jet pump is that a rotor as a cylinder permanent magnet having a plurality of magnetic poles is inserted at an outside of a spiral blade, and a stator then is fit at an outside of the rotor, and a rotating magnetic field of the stator coil can be electrically modulated, and magnetic fields at adjacent magnetic poles of the rotor are different.

To achieve another objective of the invention, an involute jet pump is provided to effectively reduce the whole volume.

To achieve a further objective of the invention, a directly driving type involute jet pump is provided to effectively enhance output efficacy.

According to the foregoing objectives, the invention provides an involute jet pump and the involute jet pump includes a spiral blade, a cylinder permanent magnet rotor having a plurality of magnetic poles, a stator and a hollow housing. The rotor is a permanent magnet hollow ring body having the plurality of magnetic poles and inserted at an outside of the spiral blade. Magnetic fields at adjacent magnetic poles are different. The stator armature is disposed at an outside of the rotor. The stator armature coil has a rotating magnetic field after electrifying, and the rotating magnetic field of the stator can be electrically modulated. The rotor in the stator drives the spiral blade for rotating due to the modulated rotating magnetic field of the stator. Two sides of the housing have an opening respectively. The stator is disposed in the housing. The stator is also circularly at an outside of the rotor. A predetermined gas gap space is disposed between the stator and the rotor. The involute jet pump of the invention inserts the rotor at an outside of the hollow tube body fixedly connected to the spiral blade, and the stator armature is disposed at an outside of the rotor. Accordingly, the whole volume of the involute jet pump can be effectively reduced. Moreover, the involute jet pump of the invention utilizes the magnetic field induction generated between the rotor and the stator, and then electrically modulates the rotating magnetic field of the stator such that a fluid flowing into the rotor obtains kinetic energy in accordance with the rotation of the spiral blade and flows. The foregoing motion can effectively enhance the output efficacy.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a conventional centrifugal pump;

FIG. 2 is a schematic diagram of a three-dimensional decomposition of an involute jet pump according to a first preferable embodiment of the invention;

FIG. 3A is a schematic diagram of a push-stopping bearing of an involute jet pump according to a first preferable embodiment of the invention;

FIG. 3B is a schematic diagram of a bearing of an involute jet pump according to a first preferable embodiment of the invention;

FIG. 4A is a cross-sectional drawing of top view of a combined central place of an involute jet pump according to a first preferable embodiment of the invention;

FIG. 4B is a cross-sectional drawing of side view of a combined central place of an involute jet pump according to a first preferable embodiment of the invention; and

FIG. 5 is a schematic diagram of an operation of an involute jet pump according to the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The foregoing and other technical characteristics of the present invention will become apparent with the detailed description of the preferred embodiments and the illustration of the related drawings.

With reference to FIG. 2 for a schematic diagram of a three-dimensional decomposition of an involute jet pump according to a first preferable embodiment of the invention is depicted. The involute jet pump of the invention includes a spiral blade 1, a rotor 2, a stator 3, a push-stopping bearing 4, a bearing 5, a cover body 6, a housing 7, a rubber sheet 8 and a stationary sheet 9. The spiral blade 1 is fixedly connected in the hollow tube body 11, and the length of the spiral blade 1 is greater than the length of the hollow tube body 11. The rotor 2 is attached to the outside of the hollow tube body 11 fixedly connected with the spiral blade 1. The rotor 2 is a hollow ring body as a permanent magnet and has a plurality of magnetic poles 21. The magnetic properties of the adjoined magnetic poles 21 are different. The foregoing rotor 2 can be composed of circularly connecting a plurality of permanent magnets to form a plurality of magnetic domains. Alternatively, the surface of the rotor 2 is attached with a plurality of permanent magnets to form the plurality of magnetic domains. The material of the foregoing rotor 2 is a permanent magnetic material. The stator 3 is circularly disposed at the outside of the rotor 2. The stator 3, for example, can be an armature having a coil with three-phase balance. The coil on the armature as the stator 3 has magnetic field after electrifying. The magnetic field of the stator 3 can be electrically modulated. Two sides of the housing 7 are symmetrically disposed with the push-stopping bearing 4, the bearing 5, the cover body 6, the rubber sheet 7 and the stationary sheet 9.

With reference to FIG. 3A for a schematic diagram of an involute jet pump according to a first preferable embodiment of the invention is depicted. The push-stopping bearing 4 includes a first ring body 41 and a second ring body 42. The first ring body 41 has magnetism, and two sides of the first ring body 41 horizontally corresponding to each other have different magnetic fields. The second ring body 42 has magnetism, and two sides of the second ring body 42 horizontally corresponding to each other have different magnetic fields. The first ring body 41 and the second ring body 42 both have through holes 43 passed by the spiral blade 1, and radius of the first ring body 41 and the second ring body 42 are different. The first ring body 41 faces to the second ring body 42. The magnetic fields of the first ring body 41 and the second ring body at horizontally adjacent sides are repulsiveness.

With reference to FIG. 3B for a schematic diagram of a bearing of an involute jet pump according to a first preferable embodiment of the invention is depicted. The bearing 5 includes a third ring body 51 and a fourth ring body 52. The third ring body 51 has magnetism, and two sides of the third ring body 51 vertically corresponding to each other have different magnetic fields. The fourth ring body 52 has magnetism, and two sides of the fourth ring body 52 vertically corresponding to each other have different magnetic fields. The third ring body 51 and the fourth ring body 52 both have through holes 53. The through hole 53 of the third ring body 51 is passed by the spiral blade 1. The through hole 53 of the fourth ring body 52 is provided for containing the third ring body 51. The magnetic fields of the third ring body 51 and the fourth ring body 52 at horizontal or vertical adjoined sides are repulsiveness.

A side of the cover body 6 has a piercing hole 61 provided for flowing fluid or a liquid-gas mixture. The housing 7 is hollow. Two horizontal sides of the housing 7 have an opening 71 respectively. The stationary sheet 9 has a through hole 91 passed by the spiral blade 1. In addition, the rubber sheet 8 also has a through hole 81 passed by the spiral blade 1 and provided for placing the push-stopping bearing 4.

With reference to FIG. 4A and FIG. 4B for a cross-sectional drawing of top view of a combined central place of an involute jet pump according to a first preferable embodiment of the invention and a cross-sectional drawing of side view of a combined central place of an involute jet pump according to a first preferable embodiment of the invention are depicted. Firstly, the rotor 2 is attached to an outside of the hollow tube body 11, in which the inside is fixedly connected to the spiral blade 1. The stator 3 is disposed inside the hollow housing 7, and the rotor 2 is further disposed in the stator 3 such that the stator 3 is circularly disposed at the outside of the rotor 2. A predetermined air gap is between the stator 3 and the rotor 2 so that when the rotor 2 rotates in the stator 3, it may not rub against the inner wall of the stator 3. Next, the spiral blade 1 sequentially passes through the through hole 91 of the stationary sheet 9, the through hole 53 of the third ring body 51, the through hole 43 of the second ring body 42 and the through hole 43 of the first ring body 41 at a side of the housing 7 in a direction being distant from the housing 7. In addition, the rubber sheet 8 is assembled in the cover body 6. The foregoing spiral blade 1 then passes through the through hole 81 of the rubber sheet 8 such that the stop-pushing bearing 4 is exactly located at the through hole 81 of the rubber sheet 8. At this time, the spiral blade 1 is located in the cover body 6. Finally, the cover body 6 is fixedly connected to the housing 7.

Similarly, the spiral blade 1 sequentially passes through the through hole 91 of the stationary sheet 9, the through hole 43 of the third ring body 41, the through hole 43 of the second ring body 42 and the through hole 43 of the first ring body 41 at another side of the housing 7 at another side of the housing 7 symmetrizing to the foregoing side in a direction being distant from the housing 7. Similarly, the rubber sheet 8 is assembled in the cover body 6. The foregoing spiral blade 1 passes through the through hole 81 of the rubber sheet 8 such that the push-stopping bearing 4 is exactly placed to the through hole 81 of the rubber sheet 8. At this time, the spiral blade 1 is located in the cover body 6. Finally, the cover body 6 is fixedly connected to the housing 7. The cover body 6 and the housing 7 selectively encapsulate insulation waterproof articles (not shown in the figure) to allow the cover body 6 and the housing 7 to have insulation and waterproof functions. The foregoing insulation waterproof article can adopt insulation waterproof material frequently seen in markets. For example, polyurethane, however, is not the key point of the invention and no need to depict herein.

With reference to FIG. 5 for a schematic diagram of an operation of an involute jet pump according to the invention is depicted. The stator 3 has a rotating magnetic field after electrifying. A magnetic field induction then is generated between the rotor 2 and the stator 3. A control circuit (not shown in the figure) is used to electrically modulate the rotating magnetic field of the stator 3. Since the rotor 2 has the plurality of magnetic poles 21 and magnetic fields of adjacent magnetic poles 21 are different, the rotor 2 attached to the spiral blade 1 generates balanced rotating magnetic field due to driven and modulated armature coil of the stator 3 such that the spiral blade 1 is driven by the rotor 2 to rotate at the original place by taking transversal axis A as a center. At this time, the magnetic fields at horizontally adjacent sides of the first ring body 41 and the second ring body 42 are repulsiveness, while the magnetic fields at vertically adjacent sides of the third ring body 51 and the fourth ring body 52 are repulsiveness. The rotor 2 may not be pushed out of the cover body 6 due to horizontal repulsive force while in rotation, and the rotor 2 may not rub against the stator 3 due to the horizontal and vertical repulsive forces such that stability of the rotor 2 can be ensured during rotation.

After the fluid, which is shown as a flowing direction B, flowing into the rotor 2 through the piercing hole 61 of the cover body 6 at a side of the housing 7, the fluid obtains the kinetic energy in accordance with the rotation of the spiral blade 1 and flows and finally flows out of the housing 7 through the piercing hole 61 of the cover body 6 at another side corresponding to the side. The rotation speed of the spiral blade 1 can be controlled by the modulation frequency of the control circuit (not shown in the figure).

It should be noted that with the foregoing depiction, the ordinary skill in the art according to the invention can understand that how the rotating magnetic field of the stator 3 be modulated by the control circuit, and the magnetic field of the stator 3 modulated by the control circuit is a conventional technique so that there is no need to describe in detail.

The involute jet pump according to the invention has the following advantages:

1. The whole volume is effectively reduced:

-   -   The involute jet pump according to the invention is that the         rotor is attached to the outside of the hollow tube body fixedly         connected to the spiral blade, and the stator is circularly         disposed at the outside of the rotor. The whole volume of the         involute jet pump is effectively reduced.

2. High output efficacy:

-   -   The involute jet pump of the invention utilizes the magnetic         field induction generated between the rotor and the stator and         then electrically modulates the rotating magnetic field of the         stator such that the fluid flowing into the rotor obtains         kinetic energy in accordance with the rotation of the spiral         blade and flows. The foregoing operation can effectively enhance         the output efficacy.

The invention improves over the prior art and complies with patent application requirements, and thus is duly filed for patent application. While the invention has been described by device of specific embodiments, numerous modifications and variations could be made thereto by those generally skilled in the art without departing from the scope and spirit of the invention set forth in the claims. 

What is claimed is:
 1. An involute jet pump at least comprising: a spiral blade; a rotor having a plurality of magnetic poles, the rotor being a hollow ring body and being disposed at an outside of the spiral blade, magnetic fields of adjacent magnetic poles being different; a stator circularly disposed at an outside of the rotor, the stator having a magnetic field capable of being electrically modulated, the rotor in the stator driving the spiral blade for rotating while modulating the magnetic field of the stator; and a hollow housing, two sides of the housing having an opening respectively, the stator disposed in the housing, a predetermined gas gap space being disposed between the stator and the rotor.
 2. The involute jet pump as recited in claim 1, wherein the spiral blade is fixedly connected in the hollow tube body, and a length of the spiral blade is greater than that of a length of the hollow tube body, and the rotor is attached to an outside of the hollow tube body fixedly connected to the spiral blade.
 3. The involute jet pump as recited in claim 1, wherein the rotor is composed of circularly disposing a plurality of permanent magnets so as to form the magnetic poles.
 4. The involute jet pump as recited in claim 1, wherein the plurality of permanent magnets are attached over a surface of the rotor to form the magnetic poles.
 5. The involute jet pump as recited in claim 1, wherein a material of the rotor is a permanent magnetism material.
 6. The involute jet pump as recited in claim 1, wherein the stator is an armature having a coil with three-phase balanced.
 7. The involute jet pump as recited in claim 1, further comprising at least one cover body, at least one push-stopping bearing, at least one bearing, at least one rubber sheet and at least one stationary sheet, wherein a side of the cover body has a piercing hole, and the push-stopping bearing includes a first ring body and a second ring body, and the first ring body and the second ring body both have a through hole passed by the spiral blade, and the bearing includes a third ring body, and the third ring body has a through hole passed by the spiral blade, and the stationary sheet has a through hole passed by the spiral blade, and the rubber sheet has a through hole passed by the spiral blade, and the spiral blade sequentially passes through the through hole of the stationary sheet, the through hole of the third ring body, the through hole of the second ring body and the through hole of the first ring body at a side of the housing in a direction that is distant from the housing, and the rubber sheet is disposed in the cover body, and the spiral sheet then passes through the through hole of the rubber sheet such that the push-stopping bearing is exactly placed in the through hole of the rubber sheet, and the spiral blade is located in the cover body, and the cover body is fixedly connected to the housing.
 8. The involute jet pump as recited in claim 7, wherein the push-stopping bearing includes a first ring body and a second ring body, and the first ring body has magnetism, and two sides of the first ring body horizontally corresponding to each other have different magnetic fields, and the second ring body has magnetism, and two sides of the second ring body horizontally corresponding to each other have different magnetic fields, and the first ring body and the second ring body respectively have a through hole passed by the spiral blade, and the first ring body faces to the second ring body, and magnetic fields at horizontally adjacent sides of the first ring body and the second ring body are repulsiveness.
 9. The involute jet pump as recited in claim 8, wherein radiuses of the first ring body and the second ring body are different.
 10. The involute jet pump as recited in claim 7, wherein the bearing includes the third ring body and the fourth ring body, and the third ring body has magnetism, and two sides of the third ring body vertically corresponding to each other have different magnetic fields, and the fourth ring body has magnetism, and two sides of the fourth ring body vertically corresponding to each other have different magnetic fields, and the third ring body and the fourth ring body respectively have a through hole, and the through hole of the third ring body is passed by the spiral blade, and the through hole of the fourth ring body is placed by the third ring body, and magnetic fields at horizontally or vertically adjacent sides of the third ring body and the fourth ring body are repulsiveness. 